2650778986 has 24 divisors (see below), whose sum is σ = 4086404640. Its totient is φ = 1289610720.

The previous prime is 2650778917. The next prime is 2650779029. The reversal of 2650778986 is 6898770562.

It is a super-3 number, since 3×2650778986³ (a number of 29 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 2650778986.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1636485 + ... + 1638103.

It is an arithmetic number, because the mean of its divisors is an integer number (170266860).

Almost surely, 2^2650778986 is an apocalyptic number.

2650778986 is a deficient number, since it is larger than the sum of its proper divisors (1435625654).

2650778986 is a wasteful number, since it uses less digits than its factorization.

2650778986 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2190 (or 2149 counting only the distinct ones).

The product of its (nonzero) digits is 10160640, while the sum is 58.

The square root of 2650778986 is about 51485.7163298715. The cubic root of 2650778986 is about 1383.9630856120.

The spelling of 2650778986 in words is "two billion, six hundred fifty million, seven hundred seventy-eight thousand, nine hundred eighty-six".